CN104838557B - For by battery discharge and the apparatus and method that determine battery condition - Google Patents
For by battery discharge and the apparatus and method that determine battery condition Download PDFInfo
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- CN104838557B CN104838557B CN201380059227.7A CN201380059227A CN104838557B CN 104838557 B CN104838557 B CN 104838557B CN 201380059227 A CN201380059227 A CN 201380059227A CN 104838557 B CN104838557 B CN 104838557B
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- battery
- rechargeable battery
- discharge
- rechargeable
- dynamic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/386—Arrangements for measuring battery or accumulator variables using test-loads
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
Abstract
A kind of method and apparatus for being used to determine the situation of rechargeable battery, determine the motional impedance of the battery, and determine battery condition classification based on the motional impedance while by the battery discharge.The battery can be discharged in a manner of recovering from the energy stored of battery discharge.
Description
Technical field
The present invention relates generally to battery discharger, and relate more specifically to Battery Diagnostic and determine battery condition.
Background technology
In dependent on mechanism of the portable set to command operation, it might be useful to, in addition to charged state, additionally it is possible to
Know the battery condition for the battery to powering portable devices.The example of such mechanism is public security organs, such as
The mechanisms such as police, fire-fighting, rescue, and the example of portable set be by these personnel command operate when use it is portable
Intercom.The public safety personnel disposed is needed with the fully charged battery being under good condition.Therefore, if filled
Electricity condition and battery condition be easier to distinguish before being disposed, and this will be beneficial.Charged state is similar with fuel gauge,
It approx indicates the ratio of the remaining battery capacity in battery.In addition to random degeneration over time, the situation of battery
Its aging is indicated at two aspects of cycle life (number of charge/discharge cycle) and actual aging.Generally, with rechargeable
Cell degradation, their maximum capacity are reduced, and their internal driving increase.
Some manufacturers establish so-called " fuel gauge " inside rechargeable battery, and it, which is internally tracked, fills
Electricity and electric discharge and charge/discharge cycle.Charged state and condition information can be retained in rechargeable battery by fuel gauge
Memory in, the situation and information can be by being read by battery-powered equipment.However, many battery packs do not have fuel oil
Table function.
The constant and close monitoring do not discharged battery current and charged, just it is difficult to the charging shape for determining battery pack
State.During as based on charging the battery parameter such as change of voltage, temperature and electric current it is some known to indicated by standard, really
Surely the capacity of given battery pack and the best method being full of are to be discharged into discharged condition to terminate, and are then filled
Electricity, which arrives, is full of situation.Once battery pack has been discharged and has been recharged, then the capacity of battery pack is can determine, and then
Know that battery pack is filled.However, determine that capacity and charged state do not indicate the situation of battery-tied soon in its cycle life directly
The not no new battery identical capacity considerably less with charge/discharge cycle of the battery that Shu Shiman fills.In addition, discharge battery can produce
Sizable heat, especially in the mechanism using a large amount of batteries.This heat represents energy loss.
Therefore, it is necessary to for battery discharge to be determined into its situation, and further utilize when discharging from battery consumption
The apparatus and method of energy.
Brief description of the drawings
Accompanying drawing is incorporated to together with following embodiment and forms the part of this specification, wherein all each
Identical reference indicates identical or intimate element in view, and accompanying drawing helps further to illustrate including wanting
The embodiment of the concept of the invention of protection, and accompanying drawing is asked to explain the various principle and advantages in these embodiments.
Fig. 1 is the block diagram according to the battery discharger system of some embodiments；
Fig. 2 is the schematic diagram according to the variable load of some embodiments；
Fig. 3 is the schematic diagram according to the variable load of some embodiments；
Fig. 4 is to configure block diagram according to a series of Battery discharge systems of some embodiments；
Fig. 5 is the block diagram according to the external module being used together with modularization discharge system of some embodiments；
Fig. 6 is by battery discharge and the flow chart for the method for determining battery condition according to some embodiments；
Fig. 7 shows the battery of the battery condition such as determined according to the display of some embodiments by rechargeable battery discharger
Power supply unit.
It should be appreciated by those skilled in the art that the element in accompanying drawing is illustrated to simplify and understand, and do not have
It is necessarily drawn to scale.For example, the size of some elements may be exaggerated relative to other elements in accompanying drawing, to be favorably improved
Understanding of the embodiments.
The appropriate in the accompanying drawings place of the component of apparatus and method is represented by the symbol of routine, wherein only showing and understanding
These relevant specific details of embodiments of the invention, so that will not be with the ordinary skill for benefiting from this specification
Those obvious details of personnel and the fuzzy disclosure.
Embodiment
Embodiment includes the method that rechargeable battery discharges, and while the rechargeable battery is discharged,
The dynamic battery electric current and dynamic battery voltage of the rechargeable battery are monitored, while the rechargeable battery is discharged.The party
Method can further comprise, in response to monitoring the dynamic battery electric current and dynamic battery voltage, determining the dynamic of the rechargeable battery
State impedance.This method can also be including one by being categorized as the motional impedance in multiple battery condition classifications, it is determined that electric
Pond condition category.
Fig. 1 is the block diagram according to the battery discharger system 100 of some embodiments.System 100 includes battery discharger
102, it may be coupled to rechargeable battery or battery pack 104, and by the battery discharge, it also determines rechargeable electricity
The situation in pond (meaning rechargeable battery battery cell).Rechargeable battery 104 can include a Battery pack contact, and it is wrapped
Include positive contact part 106, data contacts 108 and cathode contact part 112.Battery pack 104 can include memory 110, and it connects
Data contacts 108 are connected to, and storage information can be used for, including battery condition information.Discharger 102 can read the letter
Cease to determine nominal parameter and information on battery 104, such as rated capacity, the chemical attribute of battery cell, etc..Battery is put
Electrical equipment 102 can include the one group of contact coordinated with cell contact part, including positive discharge device contact 114, discharger number
According to contact 116 and discharger cathode contact part 118.Term " contact " refers to conductive component, and it is used for contacting with cooperation
Part forms physical contact, and therefore forms electrical contact.Discharger can also include controller 120, and it for example can be according to this
The microcontroller of the teaching execute instruction code of text.Discharger can also include internal load network 122, and it includes variable negative
Carry.As used in this article, term " load " refers to resistance, and the electric current from battery passes through the resistance so that battery to be put
Electricity.Load can be passive, active or storage load, or combinations thereof.Passive load for example can be fixed value resistance.
The resistance of active load can change, and active load can be adjusted.In battery discharge, such as when a battery is used for
When being charged to another battery, some energy in the energy that storage load-store is provided by battery.
Once battery 104 is connected into discharger 102, discharger can begins through variable load 122 by battery 104
Electric discharge.The controller can adjust or change the load of variable load 122, and in certain embodiments, variable load
122 can be controlled as basically opening a way to close to short circuit, or control is any resistance value therebetween.In order to
The situation of battery 104 is determined, variable load is arranged to the first value by controller, and measures cell voltage (contact 114,118
Between voltage) and discharge current, as example as indicated by the voltage at the both ends of sensing resistance 124.As illustrated, sensing resistance
" low " side in return path between variable load 122 and cathode contact part 118, but those skilled in the art should manage
Solution, electric current can be equally sensed in the high side between positive contact part 114 and variable load.Once the electricity in the first load
Cell voltage and electric current are determined, and different loads is just applied on battery by changing the value of variable load 122, enabling
Sense the second cell voltage and electric current.Then, the motional impedance of battery can be determined that the difference of first voltage and second voltage
With the poor ratio of the first electric current and the second electric current.It is, ZD=(VL1–VL2)/(IL1–IL2), wherein ZDIt is motional impedance,
VL1It is the cell voltage under the first load, VL2It is the cell voltage under the second load, IL1It is the battery current under the first load,
And IL2It is the battery current under the second load.First load and the second load can differ widely.For example, the first load can be with
It is selected as consuming electric current with substantially " C " rate (capacity of the battery represented with ampere-hour divided by one hour), and second is negative
Load can be selected as to be consumed close to 1/10 " C " rate.Once motional impedance is determined, then dead load is applied to electricity
Pond, such as by the way that variable load is arranged into place value and retains it in place value until battery discharges completely, such as by known
Charging termination standard determined by (for example, the voltage level under given current rate).Once motional impedance is determined, control
Device can be by be categorized as motional impedance in multiple battery condition classifications one, to determine battery condition or battery condition class
Not.It is, for example, battery condition can be one in the multiple classifications or discrete state corresponding with the scope of impedance.
Motional impedance can be mapped to a scope, and situation corresponding to can determining.For example, battery condition can be " very
Well ", " good ", " acceptable ", " poor " and " very poor ".Battery condition is not the charged state of battery, and it can be individually determined
And instruction.On the contrary, battery condition refers to " health " of battery 104, and it is typically related to the cycle life of battery 104.One
Denier battery condition determines, in the memory 110 of its can write-in battery pack 104.In addition, battery condition can refer to via vision
Show that device is visually indicated by discharger, the visual detector such as light emitting diode (LED) array or graphic alphanumeric display (example
Such as liquid crystal display).Battery condition can be expressed as the binary value in specific memory location in the memory 110, can
With the string shown by equipment (once it is attached to battery 104, and memory 110 can be read).
Discharger 102 may further include the modular interface with modular contact part 128,130,132, the module
Change contact to be configured to discharger 102 being connected to external discharge module 126.External discharge module 126 can include being used to connect
Connect the cooperation contact 134,136,138 of discharger 102.The connection can realize by connector, spring contacts, and can be with
Or can not be with mechanical features facilitate.External discharge module 126 can include load 140.Bear the inside of discharger 102
Contained network network (variable load 122) is and variable in certain embodiments although being probably low-down resistance in certain embodiments
Load 122 minimum can by power consumption consideration, cost consideration, or these or other consider combination and indicate.Therefore, it is outside
Discharge module 126 can be designed as handling higher levels of power consumption, to allow battery 104 quickly to discharge.When external discharge mould
When block 126 is connected to discharger 102, it can be detected by controller 120, to be used as the signal at contact 128 or signal water
Flat change, when external discharge module 126 is connected to discharger 102, the signal level changes.Once detect external discharge
Battery 104 just can be connected to the load of external discharge module 126 by module 126, discharger 102 by closure switch 142
140.When connecting external discharge unit, discharger for example based on the battery information in memory 110, for example such as pass through selection
Device switch or keyboard (not shown) are input to the selected discharge rate in discharger 102, and selectivity applies internal load network (can
Varying load 122), external loading 140 (by switch 142) or both.
Fig. 2 is the schematic diagram according to the variable load 200 of some embodiments.In certain embodiments, variable load 200 can
For the variable load 122 in Fig. 1.Variable load includes multiple resistance 202,204 and 206, and each of which, which has, to be used for
With the different value of different rate discharges.Each resistance 202,204,206 can be by corresponding switching transistor 208,210,212
Selection, each switching transistor are controlled by line 214,216 and 218 respectively, and the line for example may be coupled to controller 120.Such as
Using three resistance 202,204,206, simple 3 digit words can be used to select desired load resistance, to produce 8
The load resistance (2 of different efficiency3Secondary selection), wherein each resistance 202,204,206 can be applied individually, or it is various that
Applied in this parallel combinations.
Fig. 3 is the schematic diagram according to the variable load 300 of some embodiments.In certain embodiments, variable load 300 can
For the variable load 122 in Fig. 1.With Fig. 2 differently, wherein, multiple discrete fixed resistances, variable load 300 are used
Using modulator apparatus 302, its such as example, by adjusting the bias being applied on modulator apparatus by digital analog converter 304 and
Operate and digital value 306 is converted into simulation output for variable resistor, the digital analog converter 304.Digital value 306 for example can be by scheming
1 controller 120 provides.
Fig. 4 is to configure block diagram 400,406,412,416 according to a series of Battery discharge systems of some embodiments.Every
In individual configuration 400,406,412,416, rechargeable battery 402 is connected to rechargeable battery discharger 404, and each
In configuration 400,406,412,416, rechargeable battery discharger 404 can be used to determine the shape of rechargeable battery 402
Condition.Rechargeable battery discharger once discharges rechargeable battery 402, so that it may operates for using normal charge technology will
Rechargeable battery 402 recharges.In configuration 400, battery 402 is by may include the internal load network 405 of variable load
Electric discharge.The discharge rate of rechargeable battery discharger 404 is restricted due to being related to reliability and security, and is therefore compared
Others configuration, it has relatively slow discharge rate, but is probably the configuration of most " portable ".
In configuration 406, external discharge module 408 is coupled to rechargeable battery discharger 404, and includes load
410, it is fast when allowing rechargeable battery 402 to discharge than only being discharged by internal load network 405.Rechargeable battery discharges
Device can guide the discharge current from battery by internal load network 405, external loading 410 or both.External discharge
Module 408 and rechargeable battery discharger can have interface, and it is outside negative that it allows rechargeable battery discharger 404 to control
Carry 410 and be set to selected load value to realize desired discharge rate.
In configuration 412 and 416, loaded using storage.Configuration 412 in, rechargeable battery 402 discharge into it is another can
Storage battery 414.Rechargeable battery discharger 404 can have power control circuit 415, and it can make rechargeable electric
The voltage in pond 402 is stepped up or gradually reduced (such as buck/boost) to be recharged to battery 414, can so as to recover to be stored in
Some energy in storage battery 402 distribute not as heat.Another storage battery 414 can such as pass through holding
The charging pocket or other devices of battery 414, are directly coupled to rechargeable battery discharger 404, or it can be by outer
Portion's discharge module charging, similar to including keeping the feature of battery charging and the external discharge mould of charging circuit can also be included
Block 408.
Configuration 416 shows the external discharge module 418 for including storage load 420, and rechargeable battery 402 can discharge into
In storage load 420, so as to which some energy recovered in rechargeable battery 402 distribute not as heat.In addition,
External discharge module 418 includes exchange (AC) inverter 422, and it produces standard AC services 424 (for example, square under 50-60Hz
Root, 100-240 volts).In certain embodiments, several rechargeable battery dischargers may be coupled to external discharge module 418,
It discharges into storage load 420, and AC services can be used for setting other including battery charger as caused by inverter 422
Available electricity.
Fig. 5 is the block diagram according to the external module 502 being used together with modularization discharge system of some embodiments
500.External discharge module 502 can be similar with the external discharge module 418 in Fig. 4, and can include buck/boost power and turn
Parallel operation 504, its battery receptacle voltage to be discharged from the rechargeable battery discharger for being coupled to external discharge module 502
And electric current.Buck/boost power converter 504 changes the voltage and current received with to the storage load charging of (battery) 506.
For example, the battery (such as battery 402 in Fig. 4) to discharge can have 4 volts of rated operational voltage, while battery
506 can have 12 volts of rated voltage, and buck/boost converter 504 is by the discharge voltage of the battery to discharge
It is stepped up to 12 volts (or slightly higher), to be charged to battery 506.Battery 506 can be bulk battery, and such as 12 volts of plumbic acid is electric
Pond array, and powered to AC inverters 508.The boost in voltage of battery 506 is converted to standard AC services by AC inverters 508,
To allow it for example to being probably that other battery chargers 510 of charger that is older, staying are powered.
Fig. 6 is by battery discharge and the flow chart for the method 600 for determining battery condition according to some embodiments.Flow chart
Being handled with a series of to illustrate this method, each processing is represented by square frame in flow charts, and can include each seed treatment,
The subprocessing is not particularly shown, but those skilled in the art have once read the teaching of this method 600 and can be realized as.The party
Method by with by the execution of the rechargeable battery discharger of the rechargeable battery being discharged, it is all as shown in figs. 1 and 4.Tool
Body, this method can perform under the control of the controller, the controller it is all in this way with member in rechargeable battery discharger
Part (such as variable load, voltage and current sensing) interface and such as it is stored in the computer journey for being coupled to controller by performing
Instruction code on the sequence product exercisable microcontroller to perform processing as described herein.Therefore, this method 600 passes through
Rechargeable battery is connected to rechargeable battery discharger and started, then rechargeable battery discharger can handled
Rechargeable battery is detected the presence of in 602, such as after rechargeable battery is connected to rechargeable battery discharger.One
Denier detects rechargeable battery, and rechargeable battery discharger can just connect loads to rechargeable battery, such as interior
Section load network or external loading or both.It can select to load based on the information read from rechargeable battery, such as
The information is read from the memory in rechargeable battery.Under the control of rechargeable battery discharger, it is connected to rechargeable
At least part load of battery is variable.Then rechargeable battery discharger begins through change and loads and measure or feel
Cell voltage and electric current are surveyed, to determine the motional impedance of rechargeable battery, as indicated in processing 606.Specifically, may be used
First load can be applied to rechargeable battery and measure the first cell voltage and the first battery by storage battery discharger
Electric current, the second load (it is significantly different with the first load) is then applied to rechargeable battery and measures the second cell voltage
And battery current.Then, motional impedance is confirmed as difference and the first and second batteries electricity between the first and second cell voltages
Poor ratio between stream, as indicated in processing 608.Then, the motional impedance that this method is started based in processing 610
To determine battery condition.Rechargeable battery discharger can for example include look-up table, so that motional impedance is handed over battery types
Fork is quoted, so that motional impedance to be categorized as to one in multiple battery condition classifications according to scope.Then, can in processing 612
Storage battery discharger can write battery condition in rechargeable battery memory.In certain embodiments, battery shape
Condition can be by determining motional impedance at different discharge levels and comparing or the average result determines.Except in method
Determined in 600 beyond battery condition, rechargeable battery discharger can such as pass through selection in a variety of ways by battery discharge
Load is by battery discharge, and the selection can include selection internal load, external loading, storage load etc., as instructed with reference to figure 4
's.
Fig. 7 shows the battery of the battery condition such as determined according to the display of some embodiments by rechargeable battery discharger
Power supply unit 700.The equipment for example can be portable communication device, such as portable intercom set.The equipment can have example
Such as can be the graphic alphanumeric display 702 of LCD display, the equipment 700 can be shown including battery information on the display
Information.For example, equipment 700 can show battery charging state 704, receipt signal level 706 and battery condition 708,710.Example
Such as, battery condition can be indicated by bar paten 708, or inquired about in response to battery condition and indicated by text 710.
Therefore, embodiment provides determination shortage internal lifetime circulation management function to track relevant with battery condition follow
The benefit of the battery condition of the battery of ring life-span and other specification.Battery condition can be true when in preparing to charge to battery discharge
It is fixed, or, if battery will not be used within a period of time, the energy that simply can be stored from battery recovery.In addition,
Rechargeable battery discharger can be modular system, and it allows system to extend, and to allow quickly to discharge, and allows user
Purchase is adapted to the system configuration of oneself specific demand.
In the above specification, it has been described that specific embodiment.However, it will be understood by those skilled in the art that
Various modifications may be made and changes without departing from the scope of the present invention as claimed in claim.Therefore, this specification and attached
Figure is considered as the illustrative rather than restrictive meaning, and all such modifications are intended to be included in the scope of this teaching
It is interior.
Benefit, advantage, the solution of problem and any benefit, advantage or scheme may be made to occur or become more
Obvious any element can not all be construed to crucial, the requiring or necessary spy of any claim or all authority requirement
Sign or element.The present invention only by when appended claims and the publication of any modification including being carried out in the application pending period this
All equivalents of a little claims limit.Battery can be put to storing load discharge with recovering or shifting to another battery
The energy of the battery of electricity.
In addition, herein, first and second, the relational terms such as top and bottom can be used alone to distinguish one
Entity or action and another entity or action, and any reality between entity as being not necessarily required to or implying or action
This relation or order.Term " comprising ", " having ", " containing ", "comprising" or its any other modification are intended to non-row
His property includes, and to include, having, containing, the processing comprising series of elements, method, article or device not only include
Those elements, and can include not enumerating clearly or these processing, method, article or the intrinsic other elements of device.
Above have " including ... ", " having ... ", " containing ... ", the element of " including ... " is not excluded for (without more limiting)
Including, have, contain, other identical element be present in the processing comprising the element, method, article or device.Term
" one " and "one" be defined to one or more, unless herein it is otherwise expressly specified.As those of ordinary skill in the art manage
Solution, term " basic ", " substantially ", " close ", " about " or its any other version are defined to approach, and non-at one
In restricted embodiment, the term is defined within 10%, is defined in another embodiment within 5%, in another embodiment
In be defined within 1%, and be defined in another embodiment within 0.5%.Term " coupling " as used in this article
Be defined to connect, but be not necessarily be directly connected and be not necessarily it is mechanically connected.The equipment that " configures " in a certain way or
Structure at least configures in this way, but can also configure in ways that are not listed.
It should be understood that some embodiments can include (or " the processing of one or more universal or special controllers or processor
Equipment "), such as microprocessor, digital signal processor, the processor of customization and field programmable gate array (FPGA) and list
The programmed instruction (while including software and firmware) solely stored, it controls the one or more processors and some non-processor electricity
Road combine, with implement method described herein and/or device some, most or all of function.Selectively, some
Or all functions can be implemented by the state machine without the programmed instruction stored, or in one or more application specific integrated circuits
(ASIC) implement in, wherein some combinations of each function or some functions are implemented as custom logic.Of course, it is possible to use
The combination of both approaches.
In addition, embodiment may be implemented as the computer-readable storage with the computer-readable code being stored thereon
Medium, the code are used for programmed computer (e.g., including processor) to perform method described herein and claimed.
The example of such computer-readable recording medium includes, but not limited to hard disk, CD-ROM, light storage device, magnetic storage are set
Standby, ROM (read-only storage), PROM (programmable read only memory), EPROM (Erasable Programmable Read Only Memory EPROM),
EEPROM (Electrically Erasable Read Only Memory) and flash memory.Further, it is contemplated that although those of ordinary skill in the art pay
Go out very big effort, and it is possible to for example have motivation for the consideration of available time, current technology and economic aspect
Many design alternatives are provided, but when by concept disclosed herein and principle guiding, be able to will be easy to minimum experiment
Software instruction, program and IC as ground generation.
The summary of the disclosure is provided to allow reader quickly to determine the nature of the disclosure of the art.It should be appreciated that it will be not used in
Explain or limit the scope or meaning of claim.In addition, as can be seen that in order to simplify this in above-mentioned embodiment
Disclosed purpose, various features are combined in various embodiments.Disclosed method should not be construed as reflecting and want
Seeking the embodiment of protection needs purpose than clearly describing more features in each claim.On the contrary, weighed as appended
Profit requires what is reflected, and the theme of invention is all features less than single disclosed embodiment.Therefore, appended claims
It is incorporated at this in embodiment, wherein each claim is based on its own and as individually claimed theme.
Claims (6)
1. a kind of method for being used to discharge rechargeable battery, including：
Rechargeable battery is discharged；Wherein described electric discharge is performed by modularization discharge cell, the modularization discharge cell tool
There is internal load network and for the modular interface with multiple external loading module interfaces, the rechargeable battery is discharged
Including：
Determine that at least one external loading module is connected to the modularization discharge cell；And
The internal load network or the external loading module is selected to be used to discharge the rechargeable battery；Wherein select
It is based on described rechargeable that the internal load network or the external loading module, which are used for rechargeable battery electric discharge,
The capacity of battery performs；
While the rechargeable battery is discharged, the dynamic battery electric current and dynamic electric of the rechargeable battery are monitored
Cell voltage；
In response to monitoring the dynamic battery electric current and the dynamic battery voltage, the dynamic resistance of the rechargeable battery is determined
It is anti-；And
By one motional impedance is categorized as in multiple battery condition classifications, determine battery condition classification.
2. a kind of battery discharger, including：
Battery connector interface, the battery connector interface are configured as the battery discharger being connected to rechargeable electricity
Pond, the rechargeable battery include positive contact part and cathode contact part and data contacts；
Internal load network, the internal load network are configured as producing variable load；
Controller, the controller has the FPDP for being coupled to the data contacts, and is operable to described in change
The load of internal load network；
Current sensing circuit, the current sensing circuit are operable to indicate by the current level of the internal load network
To the controller；
Voltage sensing circuit, the voltage sensing circuit are operable to the electricity between the positive contact part and cathode contact part
Voltage level is indicated to the controller；And
The controller is also operable to：Change the internal load network to monitor the dynamic battery electric current of rechargeable battery
With dynamic battery voltage, the dynamic of the rechargeable battery is determined from the dynamic battery electric current and the dynamic battery voltage
Impedance, battery condition classification is determined based on the motional impedance, and determine that external loading module is connected to the battery and put
Electrical equipment, wherein the controller determines the capacity of the rechargeable battery, and based on the capacity of the rechargeable battery,
The internal load network or the external loading module is selected to be used to discharge the rechargeable battery.
3. battery discharger according to claim 2, wherein the controller is also operable to：By the battery condition class
Do not write in the memory of the rechargeable battery.
4. battery discharger according to claim 2, in addition to modular interface, the modular interface is configured as connecting
It is connected to the external loading module.
5. battery discharger according to claim 2, wherein the controller determines the dynamic electric by following manner
Pond impedance：First load of the variable load network is applied to rechargeable battery, and in response to applying described first
Load and determine the first electric current and the first cell voltage provided by the rechargeable battery；
Second load of the variable load network is applied to the rechargeable battery, and in response to applying described second
Load and determine the second electric current and the second cell voltage provided by the rechargeable battery；And
Wherein, by the controller by the motional impedance be defined as first cell voltage and second cell voltage it
Between the poor poor ratio between first electric current and second electric current.
6. battery discharger according to claim 2, in addition to visual display element, and wherein described controller also by
It is configured to indicate the battery condition via the visual display element.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/675,234 | 2012-11-13 | ||
| US13/675,234 US9097775B2 (en) | 2012-11-13 | 2012-11-13 | Apparatus and method for discharging a battery and determining a condition of the battery |
| PCT/US2013/069493 WO2014078242A2 (en) | 2012-11-13 | 2013-11-11 | Apparatus and method for discharging a battery and determining a condition of the battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104838557A CN104838557A (en) | 2015-08-12 |
| CN104838557B true CN104838557B (en) | 2018-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380059227.7A Active CN104838557B (en) | 2012-11-13 | 2013-11-11 | For by battery discharge and the apparatus and method that determine battery condition |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9097775B2 (en) |
| CN (1) | CN104838557B (en) |
| WO (1) | WO2014078242A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
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|---|---|
| US20140132223A1 (en) | 2014-05-15 |
| WO2014078242A2 (en) | 2014-05-22 |
| CN104838557A (en) | 2015-08-12 |
| WO2014078242A3 (en) | 2014-10-23 |
| WO2014078242A4 (en) | 2014-12-18 |
| US9097775B2 (en) | 2015-08-04 |
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